CN219115549U - Steering mechanism and trolley using same - Google Patents
Steering mechanism and trolley using same Download PDFInfo
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- CN219115549U CN219115549U CN202223347634.3U CN202223347634U CN219115549U CN 219115549 U CN219115549 U CN 219115549U CN 202223347634 U CN202223347634 U CN 202223347634U CN 219115549 U CN219115549 U CN 219115549U
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Abstract
The utility model provides a steering mechanism and a trolley using the steering mechanism, wherein the steering mechanism at least comprises a steering wheel steering shaft, a gear motor, a steering gear, a coupling, a connecting frame and other parts. The steering device is connected with the steering wheel steering shaft and is used for converting the received driving force to be transmitted to the steering wheel steering shaft to rotate; the coupler is respectively connected with the gear motor and the steering gear and is used for transmitting the driving force applied by the gear motor to the steering gear; the connecting frame is connected with a steering wheel steering shaft and synchronously rotates with the steering wheel steering shaft so as to drive a steering connecting rod connected with the connecting frame to pull wheels to steer. Through the arrangement of the utility model, a simpler and more efficient electric control steering mechanism is provided, so that the electric control steering mechanism can be more optimally applied to a trolley, and is convenient for realizing remote steering control.
Description
Technical Field
The utility model relates to the field of vehicles, in particular to a steering mechanism and a trolley using the steering mechanism.
Background
When the automobile runs, the running direction is required to be changed frequently, and when the automobile runs straight, the steering wheel is often subjected to the action of lateral interference force of the road surface, and is deflected automatically to change the running direction, and at the moment, the steering wheel is required to deflect in the opposite direction by a set of mechanism, so that the automobile is restored to the original running direction, and the set of special mechanism for changing or restoring the running direction of the automobile is called a steering mechanism (system). With the development of the intelligence of automobiles, steering mechanisms are now gradually converted from traditional mechanical hydraulic power to electric power, i.e. electric power steering systems (Electric Power Steering). An electric power steering system is a power steering system that directly uses a motor drive, without relying on hydraulic components. The steering system mainly comprises a mechanical steering gear, a steering control mechanism, a steering actuating mechanism, a torque sensor, a speed reducing mechanism, a clutch, an electric motor, an electronic control unit, a vehicle speed sensor and the like. Through introducing sensor signals such as speed, steering wheel torque, steering wheel angle increment, motor position, etc., the electronic control unit of the electric power-assisted steering system can make more optimal decisions, control the steering and working current of the motor, and then control the magnitude of steering assistance. The steering wheel capable of realizing automatic steering is not separated from the electric power steering. However, EPS systems are costly compared to conventional steering systems, and the probability of failure increases due to the addition of sensors or other components. The intelligent household automobile is suitable for most of household automobiles with high price and high intelligent degree.
While for some working vehicles, such as small vehicles used in cargo transportation/engineering environments, most of the vehicles adopt conventional mechanical steering systems, in the environments facing complex road conditions and special transportation operations, such vehicles are required to have an automatic or unmanned driving function (such as remote driving) capable of being separated from the operation of a driver, and based on the requirement, how to provide an electric steering mechanism with a simple structure and low cost to be relatively balanced to match with the automatic steering operation under remote control and to be compatible with the original mechanical steering mechanism (facilitating the transformation of the vehicle) is a problem to be solved in the prior art.
Disclosure of Invention
To address the deficiencies of the prior art referred to in the background, one aspect of the present utility model provides a steering mechanism comprising: a steering wheel steering shaft; a speed reduction motor for applying a driving force for steering the wheels; a steering gear connected to the steering wheel steering shaft for converting the received driving force to be transmitted to the steering wheel steering shaft for rotation; the coupling is respectively connected with the gear motor and the steering gear and is used for transmitting the driving force applied by the gear motor to the steering gear; and the connecting frame is connected with the steering wheel steering shaft and synchronously rotates with the steering wheel steering shaft so as to drive the steering connecting rod connected with the connecting frame to pull the wheels to steer.
Preferably, the gear motor is composed of a driving motor and a gear reducer connected to each other.
Preferably, the connecting frame is connected with the steering wheel steering shaft through a first connecting shaft, wherein the first connecting shaft is sleeved at one end of the steering wheel steering shaft, and the connecting frame is sleeved on the first connecting shaft.
Preferably, the steering mechanism of the present utility model further comprises a fixed bracket, and the fixed bracket is respectively connected with the gear motor and the steering shaft of the steering wheel.
Preferably, the fixed support comprises an a support, a b support, a c support and a fixed plate, wherein the a support is fixedly connected with the gear motor, the b support is fixedly connected with the c support, the c support is movably connected with the steering wheel steering shaft, and the fixed plate is respectively fixedly connected with the a support and the c support.
Preferably, the steering mechanism of the present utility model further comprises a second connecting shaft sleeved on the steering wheel steering shaft, and the c-bracket is hinged with the second connecting shaft.
Preferably, the gear motor is fixed on the a bracket through two locking pieces which are arranged oppositely.
Preferably, the steering mechanism is fixed to a beam.
Preferably, the beam frame passes through the b bracket and is connected with the b bracket.
In one aspect, the utility model provides a trolley comprising a structure for mounting the steering mechanism to the trolley.
Through the arrangement of the utility model, a simpler and more efficient electric control steering mechanism is provided, so that the electric control steering mechanism can be more optimally applied to a trolley, and is convenient for realizing remote steering control.
And can be compatible with the original mechanical steering mechanism so as to modify the trolley with the mechanical steering mechanism only to realize the electric control steering, and also based on the compatibility, the trolley can be switched between manual driving and remote driving (such as remote driving).
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are only embodiments of the present application, and other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a steering mechanism according to an embodiment of the present utility model;
fig. 2 is a schematic diagram showing connection between an a-bracket and a gear motor according to an embodiment of the present utility model;
fig. 3 is a schematic view showing an arrangement of a steering mechanism on a beam frame according to an embodiment of the present utility model.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.
According to one aspect of the utility model, a steering mechanism is provided for a trolley, preferably a logistics trolley, i.e. it can be used as a part of the logistics trolley, wherein the logistics trolley is a vehicle mainly used for logistics transportation, which has a remote control driving function and/or an unmanned function, and the logistics transportation is understood to be only a preferable application scene of the vehicle, but not limited to other purposes.
Referring to fig. 1, in some embodiments, a steering mechanism 1 of the present application is composed of at least a steering wheel steering shaft 10, a gear motor 11, a steering gear 12, a coupling 13, a link 14, and the like.
In a conventional mechanical steering mechanism, a steering wheel steering shaft 10 is a transmission member connecting a steering wheel and a steering gear 12 for transmitting a steering torque applied to the steering gear 12 by a driver, and has an upper portion fixedly connected to the steering wheel and a lower portion connected to the steering gear 12. In some embodiments of the present application, the original steering wheel of the cart is retained and connected to the steering wheel shaft 10 to facilitate manual steering.
The gear motor 11 is used for applying a driving force for steering the wheels, and the specific form thereof is that the driving motor 110 and the gear reducer 111 are formed, and the driving motor 110 is connected with the gear reducer 111, and it can be understood that an integrated body of the driving motor 110 and the gear reducer 111 forms the gear motor 11. Such an integrated body may also be generally referred to as a gearmotor or gearmotor. The gear motor 11 generally drives a large gear to achieve a certain speed reduction purpose through a small gear on an input shaft of the gear reducer 111 by using a motor, an internal combustion engine or other power running at high speed, and then adopts a multi-stage structure, the rotation speed can be greatly reduced, and the output torque of the gear motor 11 can be increased. The core 'boosting and decelerating' function is to achieve the purpose of deceleration by utilizing the gear transmission of each stage, and the gear reducer 111 consists of gear pairs of each stage. In one embodiment, the drive motor 110 is powered at 12V or 24V, at 60W, and at 2100r/min.
The coupling 13 is also called a coupling, and is a mechanical component for firmly connecting a driving shaft and a driven shaft in different mechanisms to rotate together and transmitting motion and torque, and has the functions of transmitting torque, absorbing rotation impact and compensating the center deviation of a transmission shaft. In some embodiments of the present application, the coupling 13 is connected to the gear motor 11 and the steering gear 12, respectively, and specifically, one end of the coupling 13 is connected to the gear reducer 111, and the other end is connected to the steering gear 12, which is capable of transmitting the driving force applied by the gear motor 11 to the steering gear 12.
In the conventional mechanical steering mechanism, the steering gear 12 is used for properly transforming the steering torque and the steering angle (mainly reducing and increasing the torque) from the steering wheel and outputting the transformed steering torque and the transformed steering angle to the steering link so as to drive the wheels to steer, so that the steering gear is essentially a reduction transmission device and generally comprises 1-2-level reduction transmission pairs. In some embodiments of the present application, the steering gear 12 is configured to convert the received driving force to be transmitted to the steering wheel shaft 10 for rotation, where the driving force is the driving force transmitted by the coupling 13 and applied by the gear motor 11. I.e. through the action of the gear motor 11-coupling 13-steering gear 12 to transmit the driving force. In some embodiments, the diverter 12 is formed from a set of bevel gears to effect rotational conversion between vertical shafts.
The connecting frame 14 is connected with the steering wheel steering shaft 10, and rotates synchronously with the steering wheel steering shaft 10 to drive the steering connecting rod connected with the connecting frame to pull the wheels to steer. In some embodiments, the connecting frame 14 is connected to the steering wheel steering shaft 10 through a first connecting shaft 141, wherein the first connecting shaft 141 is sleeved on one end of the steering wheel steering shaft 10, and the connecting frame 14 is sleeved on the first connecting shaft 141. In this arrangement, the link 14 is integral with the steering wheel shaft 10 such that the link 14 can rotate with rotation of the steering wheel shaft 10. Although the specific construction of the steering linkage is not shown in the figures, it should be understood that the steering linkage described herein is also referred to as a tie rod, and has one end connected to the link 14 and the other end connected to a knuckle on the wheel, which in turn rotates the knuckle to deflect the wheel. Since the link 14 rotates in synchronization with the steering wheel steering shaft 10, the steering link can pull the wheels to steer under the rotation of the steering wheel steering shaft 10.
Through the arrangement of the utility model, an electric control steering mechanism which is simpler and more efficient is provided, so that the electric control steering mechanism can be more optimally applied to a trolley, is convenient for realizing remote steering control, is compatible with the original mechanical steering mechanism, is convenient for modifying the trolley with the mechanical steering mechanism only to realize electric control steering, and is also based on the compatibility, so that the trolley can be switched between manual driving and remote driving (such as remote control driving).
In some embodiments, the gear motor 11 is electrically connected to a controller, and the controller can receive a remote control signal sent by a remote control device, and control the on/off and/or rotational speed control of the gear motor 11 according to the remote control signal, where the remote control device can convert the remote control signal into different electromagnetic wave signals and transmit the different electromagnetic wave signals through a specific frequency band, so that the controller can receive the remote control signal in the corresponding frequency band and convert the remote control signal into different currents for controlling the gear motor 11. Based on this setting, it is possible to realize remote control of the steering mechanism 1 of the present application to perform the steering operation.
It should be appreciated that in manual driving mode, the electronically controlled steering (gear motor 11-coupling 13-steering 12-steering wheel steering shaft 10) of the present application can be used as a source of steering assistance for mechanical steering (steering wheel-steering wheel steering shaft 10-steering 12).
Referring to fig. 1 and 2, in some embodiments, the steering mechanism of the present application further has a fixed bracket 15 connected to the gear motor 11 and the steering wheel steering shaft 10, respectively, and a second connecting shaft 16 sleeved on the steering wheel steering shaft 10. In a specific form, the fixing bracket 15 is composed of an a bracket 151, a b bracket 152, a c bracket 153 and a fixing plate 154, wherein the a bracket 151 is fixedly connected with the gear motor 11, the b bracket 152 is fixedly connected with the c bracket 153, the c bracket 153 is movably connected with the steering wheel steering shaft 10, the fixing plate 154 is respectively fixedly connected with the a bracket 151 and the c bracket 153, and the c bracket 153 is hinged with the second connecting shaft 16.
The a bracket 151 is "L-shaped", that is, is formed by two plates disposed in a vertical state, one of the plates is disposed below the gear reducer 111 and is used for carrying the gear reducer 111, and the other plate is fixed (for example, by bolting) on the fixing plate 154. The b-bracket 152 is formed by extending two ends of a transverse plate longitudinally and then extending transversely, and the two ends of the transverse extension are fixed on the fixing plate 154. Wherein the c-bracket 153 is formed by two oppositely spaced rod bodies, and one ends of the two rod bodies penetrate through the transverse plate of the b-bracket 152 to be connected with the b-bracket 152. The second connecting shaft 16 is correspondingly hinged with the two rods of the c-bracket 153 through two extended rods which are oppositely arranged at intervals.
In some embodiments, the gear motor 11 is fixed to the a-bracket 151 by two locking members 17 disposed opposite to each other. In a specific embodiment, the locking member 17 is composed of a guard plate 171, a limiting plate 172 and a base 173, the gear reducer 111 is mounted above the inner sides of the two limiting plates 172 at a distance from the base 173, and the two guard plates 171 are mounted on two sides of the gear reducer 111 respectively to enhance stability. And since the gear reducer 171 is disposed above the base 173 at a spacing, the vibration transmission can be reduced to some extent.
Referring to fig. 1 and 3, in some embodiments, the steering mechanism 1 of the present application is secured to a beam 20. Wherein the beam 20 passes through the b-bracket 152 and is connected to the b-bracket 152. The connection between the beam 20 and the b-bracket 152 may be achieved by the c-bracket 153, that is, one end of the two rod bodies of the aforementioned c-bracket 153 is fixed to the beam 20 after passing through the cross plate of the b-bracket 152. By providing the beam 20, the steering mechanism 1 can be mounted on the cart.
Referring to fig. 3, in some embodiments, the beam 20 can also secure other devices of the trolley, such as the brake mechanism 3.
In one aspect the utility model also provides a trolley having the structure of the steering mechanism 1 described hereinbefore for mounting it on the trolley.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.
Reference numerals illustrate:
steering wheel steering shaft 10
Connecting frame 14
First connecting shaft 141
Fixing support 15
a bracket 151
b bracket 152
c support 153
Fixing plate 154
Second connecting shaft 16
Locking member 17
Limiting plate 172
Claims (10)
1. A steering mechanism, comprising:
a steering wheel steering shaft (10);
a speed reduction motor (11) for applying a driving force for steering the wheels;
a steering gear (12) connected to the steering wheel steering shaft (10) for converting the received driving force to transmit to the steering wheel steering shaft (10) to rotate;
a coupling (13) connected to the gear motor (11) and the steering gear (12), respectively, for transmitting a driving force applied from the gear motor (11) to the steering gear (12); and
and the connecting frame (14) is connected with the steering wheel steering shaft (10) and synchronously rotates with the steering wheel steering shaft (10) to drive the steering connecting rod connected with the connecting frame to pull the wheels to steer.
2. Steering mechanism according to claim 1, characterized in that the gear motor (11) is constituted by a drive motor (110) and a gear reducer (111) connected to each other.
3. Steering mechanism according to claim 1, characterized in that the connecting frame (14) is connected with the steering wheel steering shaft (10) by a first connecting shaft (141), wherein the first connecting shaft (141) is sleeved at one end of the steering wheel steering shaft (10), and the connecting frame (14) is sleeved on the first connecting shaft (141).
4. Steering mechanism according to claim 1, further comprising a fixed bracket (15), said fixed bracket (15) being connected to said gear motor (11) and to the steering wheel steering shaft (10), respectively.
5. The steering mechanism according to claim 4, wherein the fixing bracket (15) is composed of an a bracket (151), a b bracket (152), a c bracket (153) and a fixing plate (154), wherein the a bracket (151) is fixedly connected with the gear motor (11), the b bracket (152) is fixedly connected with the c bracket (153), the c bracket (153) is movably connected with the steering wheel steering shaft (10), and the fixing plate (154) is fixedly connected with the a bracket (151) and the c bracket (153) respectively.
6. The steering mechanism according to claim 5, further comprising a second connecting shaft (16) provided on the steering wheel steering shaft (10), wherein the c-bracket (153) is hinged to the second connecting shaft (16).
7. Steering mechanism according to claim 5, characterized in that the gear motor (11) is fixed to the a-bracket (151) by means of two locking elements (17) arranged opposite each other.
8. Steering mechanism according to claim 5, characterized in that the steering mechanism is fixed to a beam (20).
9. Steering mechanism according to claim 8, characterized in that the beam (20) passes through the b-bracket (152) and is connected to the b-bracket (152).
10. A trolley, characterized in that it comprises a structure for mounting the steering mechanism according to any one of claims 1-9 to the trolley.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223347634.3U CN219115549U (en) | 2022-12-14 | 2022-12-14 | Steering mechanism and trolley using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223347634.3U CN219115549U (en) | 2022-12-14 | 2022-12-14 | Steering mechanism and trolley using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219115549U true CN219115549U (en) | 2023-06-02 |
Family
ID=86532871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223347634.3U Active CN219115549U (en) | 2022-12-14 | 2022-12-14 | Steering mechanism and trolley using same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219115549U (en) |
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2022
- 2022-12-14 CN CN202223347634.3U patent/CN219115549U/en active Active
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